Toy gun



Nov. l5, 1955 w. o. HERSEY 2,723,491

TOY GUN Filed Feb. 14. 1952 TOY GUN Walter 0. Hersey, Glendale, Calif.,assigner to Knickerbocker Plastic Co., Inc., Glendale, Calif., acorporation of California Application February 14, 1952, Serial No.271,526

2 Claims. (Cl. 46-191) This invention relates to a noise-making toy gun,and particularly to the trigger and hammer mechanism for such gun.

The trigger and hammer mechanism of my invention is simple in that ithas only two moving parts and may be mounted on two pins. vTheconstruction is rugged and produces a loud and realistic sound. While Ihave designed it for a toy gun, it will, as will be evident to thoseskilled in this art, be adaptable to a real gun.

My invention will be further described in connection with the drawing,in which Fig. 1 is a half section of the gun showing the trigger andhammer mechanism in rest position or in the equivalent tiring position;

Fig. 2 is a detail of the trigger and hammer, the hammer headapproaching striking position;

Fig. 2a is a detail of the trigger in cocked position;

Fig. 3 is an irregular section taken on line 3 3 of Fig. 4;

Fig. 4 is an irregular section taken on line 4-4 of Fig. 2;

Fig. 5 is a detail section of Fig. 2, showing the hammer approaching thecocked position shown in Fig. 2a;

Fig. 6 is a perspective view of the hammer head.

The gun as illustrated is made in two molded halves, conveniently butnot necessarily of plastic. The halves when assembled in theconventional manner make up a gun. Each half contains the handle 1, thebarrel 2, the trigger guard 3, and the anvil 4. The halves carry aperipheral flange 5 which, when nested or abutted against the peripheraltlange of the other half, complete the housing of the gun.

Nested between the tWo halves is the hammer and trigger mechanism. Thetrigger is cast or, if desired, forged to include a trigger finger 6, adog 7, and a spring support rod 8 which carries a bore 9 near its end.The trigger is pivoted on pivot pin 10 passing through the two halves ofthe gun.

The hammer is composed of a hammer head 12 forming a part of the hammerhead arm 13 which extends in a roughly perpendicular direction to thehammer face 14 of the hammer head 12. At the extreme end of the arm 13is a bore 16. The radius arm 17 extends in an approximatelyperpendicular direction to the arm 13 and terminates in a hub 18containing a slot 19. The pin 20 passes through the slot and is xed ineach of the halves of the gun on assembly thereof. The radius armcarries a cam shoulder 22. The length of the arm of the dog 7 from thepivot pin 10 is such as to intersect the cam shoulder 22. The tensionspring 21 is connected to the hammer and the trigger by positioning itsends in suitable spring supports, to wit, in the bores 9 and 16.

One of the important and novel features of my trigger and cockingmechanism is the simplicity of the mechanism whereby the single movementof the trigger both cocks and trips the hammer. As will be observed, thepoint of support of the spring on the hammer, i. e., bore 16,

Y, 2,723,491 Patented Nov. 15, 1955 the spring is in tension. Theresultant of this tension force, applying the simple principle of theresolution of forces, is a component of force along the axis of theslot, tending to pull the hammer upward in the direction of the arrow onB-B and holding the pin 20 against the base of the slot 19, as shown inFig. 1. As the trigger 6 is pulled counterclockwise, the arm 8 and thedog 7 pivot counterclockwise about the pin 10. The bore 9 moves to aposition below the horizontal (see Fig, 5) so that the axis of thespring A-A now makes a reliex angle with the horizontal. The resultantof the tension force axially of the spring i. e., along the axis A-A, isa downward push on the radius rod 17 (arrow C). However, the dog 7,abutting against the cam shoulder 22 as the trigger rotatescounterclockwise during the cooking motion, creates a pressure in atangential and upward direction (arrow D) suicient to overcome thedownward force represented by arrow C. The result is that during thecounterclockwise rotation of the trigger, the radius arm 17 and thehammer are rotated clockwise with the pivot pin 20 in the lower end ofthe slot 18. As the trigger completes its counterclockwise rotation itclears the cam shoulder. The upward force imposed on the cam shoulder bythe dog 7 (arrow D) is released and the downward force (arrow C),resulting from the positioning of the spring axis A-A at a reflex angleto the horizontal, snaps the hammer 12 and radius arm 17 downward sothat the pin 20 is now in the upper end of the slot 19 (see Fig. 2). Atthe same time the tension of the spring will pull the hammer headforward so that the face of the hammer head 12 slaps against the anvil 4with a loud bang.

It will be observed that the axis of the slot 19 in Fig. 2 is inclinedto the vertical at an acute angle in a counterclockwise direction, sothat as the radius arm moves down in taking the position shown in Fig.2, with the hammer against the anvil, the extreme edge of the camshoulder has moved to the right, that is, the radius of the end of thecam shoulder about the pin 20 has shortened. Thus, when the trigger isreleased the spring tension moves the trigger to its rest position (seeFig. l), the trigger rotates clockwise and the extreme end of the dog 7clears the end of the cam shoulder. Now, however, the spring and arm 8are above the horizontal, as in Fig. l, and the resultant of the forcecauses the radius arm to be raised and the pin to move to the bottom ofthe slot, thus completing the cycle. v

While l have described a particular embodiment of my invention for thepurpose of illustration, it should be understood that variousmo'dications and adaptations thereof may be made within the spirit ofthe invention as set forth in the appended claims.

I claim:

l. A pistol comprising a barrel, an anvil, a hammer carrying a hammerhead, a radius rod, said hammer being mounted on said radius rod, apivot pin, a slot in said radius rod, the axis of said slot being at anacute angle to a vertical to the axis of said barrel, said pivot pinbeing positioned in said slot and said hammer head being in strikingrelation to said anvil on rotation of said radius rod about said pin, atrigger, a second pivot pin, said trigger being pivotally mounted onsaid second pivot pin, an arm connected to said trigger, a springconnected to said arm and to said hammer, normally holding said radiusrod in a raised position with its pivot pin disposed in the lower end ofsaid slot, a dog connected to said trigger, and a cam shoulder on saidradius rod cooperating with said dog under the force of said spring sothat when the trigger is operated the hammer is irst rotated to cockedposition, the radius rod is moved to the position with the pivot pindisposed'in the upper end of the slot, and to return the hammer tonormal position with aA hammer blow against the anvil.

2. A pistol comprising a barrel, an anvil, a hammer carrying a hammerhead, a radius rod, said hammer being mounted on said radius rod, apivot pin, a slot in said radius rod, said pivot pin being positioned insaid slot and said hammer head being in striking relation to said anvilon rotation of said radius rod about said pin, a trigger, a second pivotpin, said trigger being pivotally mounted on said second pivot pin, anarm connected to said trigger, a spring connected to said arm and saidhammer, the point of connection of said spring to said 15 arm beingabove a line parallel to the axis of said barrel and passing through thepoint of connection of said spring to said hammer and normally holdingsaid radius rod in a raised position with its pivot pin disposed in thelower end of said slot, a dog connected to said trigger, and a camshoulder on said radius rod cooperating with said dog under the force ofsaid spring so that when the trigger is operated the hammer is rstrotated to cocked position, the radius rod is moved to the position withthe pivot pin disposed in the upper end of the slot, and to return thehammer to normal position with a hammer blow against the anvil.

References Cited in the tile of this patent UNITED STATES PATENTS2,597,089 Everett May 20, 1952

